Pan bottom



FIG. 1 is a front side perspective view showing the new design for a pan bottom;

FIG. 2 is a left side view thereof,

FIG. 3 is a right side view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a bottom perspective view thereof.

The broken lines are included to show unclaimed subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a pan bottom, as shown and described. 